ELTs, AO wavelengths and science output
(2008) Conference on Ground-Based and Airborne Instrumentation for Astronomy II 7012. p.121-121- Abstract
- A study is presented of the impact on science data from extremely large telescopes of a transformation of wavelength base for optimization of actuator architecture from 2 200 to 1250 nm. From the optical path difference (OPD) data for Euro50, we transform to E-ELT OPDs. We compute the corresponding power spectrum, in which we simulate a higher actuator density via high-pass filtering to convert from K to J band actuator-pitch optimization. From the modified power spectrum we derive the correspondingly modified OPDs, PSFs and Strehl ratios. A massive improvement is demonstrated resulting from converting from AO@K to AO@J. This result is followed up by model-based E-ELT imaging in a field in a galactic disc at a distance of 4 Mpc. The... (More)
- A study is presented of the impact on science data from extremely large telescopes of a transformation of wavelength base for optimization of actuator architecture from 2 200 to 1250 nm. From the optical path difference (OPD) data for Euro50, we transform to E-ELT OPDs. We compute the corresponding power spectrum, in which we simulate a higher actuator density via high-pass filtering to convert from K to J band actuator-pitch optimization. From the modified power spectrum we derive the correspondingly modified OPDs, PSFs and Strehl ratios. A massive improvement is demonstrated resulting from converting from AO@K to AO@J. This result is followed up by model-based E-ELT imaging in a field in a galactic disc at a distance of 4 Mpc. The improvements in image quality, background and limiting magnitude are very large as are the increases in photometric precision derived from the field imaging. Further, the great science benefit and large opportunities provided by partial AO is demonstrated. In conclusion, while admittedly challenging, pushing AO optimization to wavelengths as short as possible is of prime concern for the science output of ELTs. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1283649
- author
- Ardeberg, Ame and Linde, Peter LU
- organization
- publishing date
- 2008
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Extremely Large Telescopes, optical path differences, power spectrum, point-spread function, wavelength range, photometry, spatial, resolution, imaging, adaptive optics
- host publication
- GROUND-BASED AND AIRBORNE TELESCOPES II, PTS 1-3
- volume
- 7012
- pages
- 121 - 121
- publisher
- SPIE
- conference name
- Conference on Ground-Based and Airborne Instrumentation for Astronomy II
- conference dates
- 2008-06-23 - 2008-06-28
- external identifiers
-
- wos:000260430300051
- scopus:66749092194
- ISSN
- 1996-756X
- 0277-786X
- language
- English
- LU publication?
- yes
- id
- 0dc46b08-4e1d-489e-a41b-d89bd7f8bc26 (old id 1283649)
- date added to LUP
- 2016-04-01 12:07:11
- date last changed
- 2025-01-02 06:25:39
@inproceedings{0dc46b08-4e1d-489e-a41b-d89bd7f8bc26,
abstract = {{A study is presented of the impact on science data from extremely large telescopes of a transformation of wavelength base for optimization of actuator architecture from 2 200 to 1250 nm. From the optical path difference (OPD) data for Euro50, we transform to E-ELT OPDs. We compute the corresponding power spectrum, in which we simulate a higher actuator density via high-pass filtering to convert from K to J band actuator-pitch optimization. From the modified power spectrum we derive the correspondingly modified OPDs, PSFs and Strehl ratios. A massive improvement is demonstrated resulting from converting from AO@K to AO@J. This result is followed up by model-based E-ELT imaging in a field in a galactic disc at a distance of 4 Mpc. The improvements in image quality, background and limiting magnitude are very large as are the increases in photometric precision derived from the field imaging. Further, the great science benefit and large opportunities provided by partial AO is demonstrated. In conclusion, while admittedly challenging, pushing AO optimization to wavelengths as short as possible is of prime concern for the science output of ELTs.}},
author = {{Ardeberg, Ame and Linde, Peter}},
booktitle = {{GROUND-BASED AND AIRBORNE TELESCOPES II, PTS 1-3}},
issn = {{1996-756X}},
keywords = {{Extremely Large Telescopes; optical path differences; power spectrum; point-spread function; wavelength range; photometry; spatial; resolution; imaging; adaptive optics}},
language = {{eng}},
pages = {{121--121}},
publisher = {{SPIE}},
title = {{ELTs, AO wavelengths and science output}},
volume = {{7012}},
year = {{2008}},
}